Type-writing machine.



P. I. VAN ANDEN. TYPE WRITING MACHINE.

APPLICATION FILED AUG. 17, 1905.

W/Z/fSGES- I I //VI/E/V7'O/P 67 @MMCJWMM PATENTED JUNE 4, 1907.

, "UNITED STATES.

PATENT OFFICE.

FREDERICK I. VAN ANDEN, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR TOUNDERWOOD TYPEWRITER COMPANY OF NEW YORK, N. Y A CORPORATION OF NEW JERSEY.

TYPE-.WRITING MACHINE,

Specification of Letters Patent.

Patented June 4 1907.

To all whom it may concern:

Be it known that I, FREDERICK I. VAN AN DEN, a citizen of the United States, residing in Washington, District of Columbia, have invented certain new and useful Improvements in Type-Writin Machines, of-which the following is a speci cation This invention relates to the ribbon mechanism of ty ewriting machines, in which the ribbon is vibrated to cover and uncover the printing point at each type stroke. a In man of such machines, particularly in the wel known Underwood machine, in which I illustrate an embodiment of my invention, it is the practice to employ at the printing polnt a vibrator having posite apertures or eyes one at each side oi the type guide, and the ribbon must be threadedthrough said eyes. This operation in practice is found diflicult, owing to the narrowness and limpness of the ribbon; moreover the unavoidable soiling of the fingers in handling the inky ribbon is highly objectionable.

The object of my invention is to overcome these disadvantages. j

In carrying out my invention, I preferably construct each eye of two separable parts,

and, as illustrated in the accompanying drawings, these parts may in said Underwood machine be hingedat each e e, so that, although the eye is normally 0 osed to retain the rlbbon, still it may be instantly open at any time in order to release the ribbon or to permit theintroductionof a ribbon into the iif ii' d1 F I t e accom anyin awin s, i ure 1 is an elevation (if the ribbon vifi rator of the front-strike Underwood typewriting machine, showing my improvements applied thereto; the parts being in normal pos1tion,-

with the ribbon eyes closed. Fig. 2 1s a similar view, showing the ribbon eyes open. Fig. 3 is a perspective view of the device seen at The ribbon vibrator consists principally of an upright stem portion 1, connected at its lower end by a pivot 2, to an operating lever 3, and at its 11 per end bifurcated to leave an opening 4 For the passage of the types. Said stem is also usually provided with guiding ears ,5. The ribbon 6 is threaded through a pair of eyes, one at each side of said bifurcation; each eyecomprising a main upright portion 7, a lower arm projecting from the portion 7, and an upper projection or car 9 at the top of the portion 7 and overlying the arm 8; said portions 7, 8 and 9 being integral with the stem 1. The remaining portion of. each eye is in the form of a vertical pin 10, which, instead of being rigidly fixed as at 11' to the said arm 8, so that, although the eye is normally closed by said pin, as at The lower end in is provided with a sheet metal hinge-p ate or leaf 12 to receive the pivot 11. The upper end thereof may be provided with a tip 13 for the convenience of the operator in manipulating the pin.

Each of the ears 9 is provided with a catch portion 14, to receive and retain the pin 10 during the operation of the vibrator; the parts 9 and 10 being relatively formed so that the pin 10 may spring into the catch 14 and can only be released therefrom by being sprung open; so that it is securely held.

. The tip 13 projects above the ribbon carrier, and hence cannot come into contact with the ribbon, and is never inky; so that the ribbon eye's may be opened without soiling the fingers, .and the ribbon may be lifted out or dropped in instantly and with a minimum of handling. This operation it will be seen is veryconvenient, especially where it is desired to take out the spools together with the attached ribbon, or to introduce into the machine afresh set of spools with an attached ribbon.

It will be understood. that the keeper or mousing 10 may be changed greatly in form and manner of mounting or releasing within the scope of the invention, and also that my improvements are applicable to various other vibrators than this s ecific form herewith illustrated. It will a so be understood that it is not essential in all cases that the eye when-in normalcondition shall be completely closed, so long as the ribbon is securely retained thereby and the mousing can be moved to release the ribbon.

Having thus described my invention, I claim:

In a typewriting machine, a ribbon-vibrato op n the eye, as at Fig. 2. of t e upon the vibrator as heretofore, is pivoted Figs. 1 and 3, still the pin may be swung outtor comprising a stem having a pair of oppointo the catch-portions of said ears, and exsite arms, a pair of upstanding plns, sheettending above said ears for convenience of metal hinge plates or leaves holding said pins the operator in manipulating the pins.

andpivoted to said arms, and ears extending FREDERICK I. VAN ANDEN.

from said stem above said arms and formed Witnesses: with catch-portions to receive and retain the M S. EYLAR,

pins, the latter being constructed to spring A. GQOLNEY. 

